Gas-producer.



' Patented Nov. 27, I900;

J. 0. E. TROTZ. GAS PRODUCER.

(Application filed. June 19, 1899) 2 Shee tsSheet I.

(No Model.)

Wit-masses Patented Nov. 27, I900. J. 0. E. TBOTZ.

GAS PRODUCER.

I :Application filed June 19, 1899.) (No Model.) 2 Shank-Sheet 2. r

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GAS PRODUCER.

SEECIFIGATION forming part of Letters Patent No. 662,609, dated November 27, 1900'.

Application filed June 19, 1899- Serial No. '72l, 0.4(].- \No model.)

To all whont it WNW/\OOHGWVL:

Be it known that I, Joann OTTO EMANUEL TROTZ, of the city and county of Worcester, in the State of Massachusetts, haveinvented certain new and useful Improvements in Gas- .Produoers; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, and in which Figure 1 represents so much of the upper part of a gas-producer as is necessary to illustrate my improvements, a vertical section being shown th-roughthe parts'to which my said improvements more particularly relate. Fig. 2 represents an enlarged view of the parts shown in section in Eig. 1, and Fig. 3 is a top or plan View thereof.

The object of my invention is to provide means for preventing the escape of gas from the producer through the poke-holes when the covers are removed therefrom topoke or stir the coal within said producer in the process of forming the gas therein; and it consists in combining with the cover of said producer over each poke-hole a frame provided with a central opening and with an annular chamber having a series of ports opening therefrom and pointing toward said centralopening and poke-hole, a steam-pipe connected with said frame for supplying steam to its annular chamber, and a removable cover adapted to fit against the frame over the pokehole, substantially as and for the purpose hereinafter more fully set forth.

To enable others skilled in the art to which my invention appertains to better understand the nature and purpose thereof, I will now proceed to describe it more in detail.

Referring to the drawings, A represents the upper part of an ordinary gas-producer, having the usual cover A, hopper B, into which the coal is discharged to conduct it into the chamber of said producer, and a series of poke-holes C (only one of which is shown in this instance} for reaching the interior of the producer to poke or stir the coal during the process of forming the gas therein. As previously stated, my invention relates to the means employed for preventing the escape of gas through said poke-holes when the covers are removed therefrom to thus poke or stir the coal. .Said result is accomplished by forcing a steam-blast from all sides into the pokehoie when its cover is removed to poke the coal, as aforesaid.

A'device or apparatus for effecting the I above result I am aware is not broadly new,

and I therefore limit my invention to substantially the construction herein set forth, and pointed out in the claims.

My improved device is constructed as follows: A frame Dis fastened to theproducercover A,su rrounding each poke-hole O,which is recessed upon its upper side and provided with a central vertical opening D substantially the size of and comin g over saidpokehole 0. The frame is also provided around said central opening D with an external annular flange D for the removable cover E of the poke-hole to fit over and also for the purpose of forming an annular recess or receptacle E around opening D to receive and hold the water produced by thesteam coildensation forced from the steam-supply pipe at each time the steam is let on, and thus form a water seal between the bottom of the removable cover E and frame D. Said frame D is also provided with an annular chamber F, extending around the vertical circular part I) thereof and connected with a steam- .pipe Gfor supplying steam to said chamber.

It is also provided with a series of ports or steam-discharge openings I through the inner walls D of the verticalcircular part D all pointing toward the central opening D and poke-hole O, as is best shown in Figs. 2 and 3 of the drawings, the size and number of'said ports being, of course, varied as desired.

By the above-described construction it is reached from the outside to clean the same, openings are formed in the outer wall. of the vertical circular part D of frame D, and said openings are provided with suitable removable plugs K.

The steam-supply pipe G is in practice connected, by means of suitable branches, with each poke-hole frame D; but-as onlyone V poke-hole is in this instance shown. said branch connections are also not shown.- Each branch is provided with a suitable vaive G for regulating the supply of'steam-to the frame and poke-hole.

The operation of shutting off the escape of.

gas from the producer to poke-thecoal therein is, in brief, as follows: The attendant first opens the valve G to let on the steam, which causes the condensed steam between saidvalve and the frame to be forcedtherefrom into the receptacle E, formedaround the bottom of the removable cover E, and produces a Water seal around the same, as previonsly described. The vaporized steam now flowing in impinges against the cover E in an unbroken volume around and over the same, and the latter may now be removed by the attendant Without danger of any of the gases in the producer escaping; Having been removed and the necessary poking performed, said cover is replaced and the steam-blast shut ed by closing the valve G. After said operations sufiicient water produced by condensation remains in the frame around-the bottom of the removable cover to form a tight seal against the escape of gas from the producer,(luring the interval between one poking operation and another. Therefore my improved sealing device not only serves as an eficctual check against the escape-of gas when the poke-holes are open, but also to prevent the escape of gas around the removable covers thereof.

Having now described my invention, what ecacoe I claim therein as new, and desire to secure by Letters Patent, is-- 1. in a gas-producer, a device combmed withtheco-ver thereof over each poke-hole,

comprising a frame having a central, vertical opening therethrough and an annular chamber in the vertical, circular part thereof provided with a series of inclined ports rthremgh the inner, vertical wall of said chamber, arranged at short distances apart and pointing toward said poke-hole; said frame also. being provided through the outer, vertical wall of its chamber with inclined openings, in alinement with the aforesaid ports,

andprovided with means forolosing said inalso being provided through thevouter ver-' tical wall of its chamber with inclined openings, in alinement with -the aforesaid ports and provided with means for closing said inclined openings; the frame also having a steam-supply pipe connected with its annular chamber, and an annular, upturned flange around its central opening to form an annular trough for the poke-hole cover to rest in, and said poke-hole cover as and for the purpose set forth.

- JOHAN OTTO ElllANUlr'ih TRO'lZ.

Witnesses:

A. A. BARKER,

W. B. Nounsn. 

